[Haskell-cafe] some problem with Cabal

[qiqi]

Thank you, Daniel. 

The problem is solved! I found out that both global and local package db get
directory-1.1.0.0 and process-1.0.1.5. I unregistered them and other caused
broken packages in the local package db. Then I successfully installed back
hmatrix, ghc-mod, happy and etc. It seems that xmobar will install
directory-1.1.0.0 again in the local package db. 

Did you succeed in installing haddock 2.9? Mine got some syntax oriented
error duing cabal install haddock. But it's fine.



Daniel Fischer wrote:
> 
> On Wednesday 09 March 2011 12:16:30, Qi Qi wrote:
>> I think this is the same problem as I got during installing some other
>> packages via cabal such as hmatrix, ghc-mod, happy and etc.
>> 
>> Does anyone have any idea about how to solve it?
> 
> 
> I think it may be a problem with your GHC. I have no problems cabal 
> install'ing packages using
> 
> $ cabal --version
> cabal-install version 0.10.0
> using version 1.10.1.0 of the Cabal library
> 
> $ ghc --version
> The Glorious Glasgow Haskell Compilation System, version 7.0.2
> 
> Does compiling a simple module using the Cabal library work?
> (for example
> 
> module Main (main) where
> 
> import Distribution.Simple.Setup
> 
> main :: IO ()
> main = print defaultGlobalFlags
> 
> )
> 
> If your Cabal package is really unusable, that should break too (but then, 
> why doesn't ghc-pkg check report it as broken?). Re-installing Cabal would 
> be an option then.
> If it works, on the other hand, the problem may be with your cabal and re-
> installing that may be worth a try.
> 
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> 


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